Car-coupling



dro Model.) I 4 sheets-sheet 1.

S. H. HARRINGTON.

GAR OUPLING. N0. 405,255. Pailell'edu'llne 18, 1889.

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s. H. HARRINGTON.

.GAR OUPLING- No. 405,255. 1889l FIG. 8.

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(No Model.) @sheets-sheet 3.

, S. H. HARRINGTON.

' GAR OUPLING.

No. 405,255. Patented June 18, 1889.

(No Model.) 4 Sheets-Sheet 4.

S. H. HARRINGTON.

' l GAR GUPLING.

No. 405,255. i 585551155551155 18, 1889.

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UNITED STATES PATENT OFFICE.

SAMUEL H. l-IARRINGTON, OF COLUMBUS, OHIO.

CAR-COUPLING.

SPECIFICATION forming part of Letters Patent No. 405,255, dated June 18,1889.

Application filed January 2]., 1888. Serial No. 261,502. (No model.)

To @ZZ whom it may concern:

Beit known that I, SAMUEL H. HAERING- TON, of Columbus, county ofFranklin, State of Ohio, have invented a new andl useful lmprovement inCar-Couplings, of which the following is a true and exact description,reference being had to the accompanying drawings, which form a part ofthis speciiication.

My invention relates to that class of carcoupling devices knowngenerally as vertical hook-couplingsg7 and its object is in the firstplace to simplify, strengthen, and cheapen couplings of this kind, andin the second place to construct my coupling in suc-h a way that it willbe capable of convenient and efficient use in connection with couplingdevices of radically different natures.

Generally speaking, the main points of my invention consist in devicesfor strengt-hening a coupling-head made up of two parallel plates ofmetal secured together by stays and in such manner as to leave the spacebetween the plates open and unobstructed in front, in the use of acoupling-kn uckle of peculiar form, in uniting the coupling-nose to thehead in such a way that it will not be exposed to destructive strainseither in coupling or in bufing, in securing within the coupler aretractible supplemental' coupling device which,while securely fastenedto the coupling-head and ordinarily inclosed and held entirely withinthe same, can readily be extended to make connection with forms ofcoupler unadapted to couple with the head itself, in making thisretractible coupling device of a form adapted to engage with thewell-known Miller coupler, in so constructing the retractible couplingdevice that it will normally and usually serve as a latch to operate inconnection with the regular coupling-nose, and in the various deviceshereinafter fully described, and shown in the drawings, whereby myinvention is perfected and adapted for use.

Reference being now had to the drawings which illustrate my invention,and in which Figures 1 to 16, inclusive, show my preferred construction,while the remaining figures are intended to illustrate modificationsthereof, Fig. 1 is a top view of my improved coupling-head; Fig. 2, anend front view of the same; Fig. 3, a plan view of the coupling with theupper or top plate removed to show the interior construction thereof.Fig. 4 shows a section on the line 1 2 of Fig.3; Fig. 5, a section onthe line 3 4 of Fig. 3. Fig. 6 shows my improved coupling as used inconnection with an ordinary link-and-pin draw-head of another car. Fig.7 shows the .coupling as used in connection with the Miller coupling.Fig. 8 shows my coupling as used in connection with another coupling ofthe same construction, or as it would appear when used with a Janneycoupler. Fig. 9 is a section similar to thatY shown in Fig. 4, exceptthat the coupling-nose is open and the latch device omitted. Fig. 10 isa section throughthe coupling-nose and its supports on the line a'. ofFig. 9. Fig. 11 is a section through the shank of the coupling-head onthe line y y of Fig. 9. Fig. 12 is a perspective view of the arm of thecoupling-head whichsustains the coupling-nose. Fig. 13 is a perspectiveview of the coupling-nose. Fig. 14 is a plan view of the coupling deviceas it appears when the'coupling-nose is open, the top plate beingremoved so -as to show the nose and its latch in position. Fig. 15 is asectional view of the coupling on the line e' z of Fig. 14. Fig. 16 is asectional view on the line 5 6 of Fig. 6. Fig. 17 is a perspective viewof a modified form of my coupler, the jaw or coupling-nose beingrepresented as open. Fig. 18 is a view of the modified combined couplingdevice and latch which is adapted for use with a coupling-head like thatof Fig. 17. Fig. 19 is a perspective View of the coupling-nose shown inFig. 17. Fig. 2O is a plan view of another modification of my invention,the upper plate being here removed to show the interior mechanismthereof. Fig. 21 shows in plan another simple latching device. Fig. 22is a plan view of two of the couplers made in accordance with themodified form shown in Fig. 17, the upper plate of one being removed toshow the interior mechanism. Fig. 23 is a side view of the couplingshown in Fig. 21, the upper plate being here restored. Fig. 24 is a topview of the modified coupler, showing the strengthening devices whichare advisable in connection with it. Fig. 25 is a sectional view on theline w w of Fig. 24. Fig. 2G is a cross-section on the line 7 8 of Fig.24.

IOO

made of cast metal, these stays would form' part of the saineeastinggbut when the plates are made of wrought-iron, as I prefer theyshould be made, the stays maybe formed with the plate, as shown in Fig.26,01' may bemade of separate pieces. By constructin the h eads in thisway the space between thein opens freely in front, as is best shown inFig. 2. Another advantage is incident to the use of the stays betweenthe coupling-head proper and the back end of its shank-to wit, thestrengthening of the shank to resist buflingshocks the arrangement ofthe stays on the outer edges of the shank, as shown at E2 El,effeetually bracing it and preventing buckling.

I) is a re-en forcing rim formed on the front outer edges of the platesB and B', so as to broaden and strengthen the front edges of thecoupling-head. In order to strengthen the back part of the head and itsshank, I prefer to eorrugate the metal in the direction of the length ofthe shank. rFliese corrugations are shown in Figs. 23 and 94, and inFigs. l to 16 a single eorrugation is represented, which is made, also,to serve another important purpose, as will hereinafter be cX- plained.

The general outline of my coupling-head and the exterior part of its jaware like those ot` the well-known .Ianney couplers, the coupling-nose Cbeing pivoted in aprojecting arm A of the head and a guard-arm A2 beingprovided opposite to this arm. The shank of the coupler is indicated bythe letterA1,while the letter A3 indicates the pin on which the Iiaw Crotates. This pin serves also as a stay to secure the plates B Btogether near the outer extremity of the arm A. I prefer to sccure it inplace byinserting it in holes in the plates B B while the said plate isheated and allowing the plate to cool afterward, when it will,of course,shrink tight-ly upon the pin A3.

XVhile, as I have said, the general outline of my coupler-head isidentical with that of the Janney coupler, I will here call attention tothe fact that the end of the arm A, instead of being rounded in formthroughout, has a square-cornered projection a (scc Figs. l and E3)formed on the outside of the two plates B B', the regular curvedsurfaces being preserved beneath these plates, as shown at a. Thischange I have made in order to broaden the front end of the arm A andgive it greater strength to resist violent blows.

C is my coupling knuckle or jaw, which secured in the arm A between theplates B and B by means of the pivoted pin A3. This knuckle has itsouter face bifurcated, as shown at e, but by using the suliplementalcoupling device hereinafter explained, I am enabled to do away with thepin-hole in the upper and lower flanges, which has heretofore beennecessary to enable couplers of this general kind to be used with alinleeoupler.

The construction of my improved knuckle is shown in Figs. 13 and 19,Fig. 13 representing its construction when used with an arm A having thesquare corners c, and Fig. l5) representing'the coupling-knuckle adaptedfor use with a round-ended arm A'such, for instance, as is shown in Fig.l7-the only difference being that where the square corners a are used itis necessary to cut away the upper and lower portions ofthe outer end ofthe coupling-knuckle, so that they will not interfere with the cornersa. This is shown at c', Fig. 13.

e2 are the surfaces which rest against the rounded surface a of the armA, while the surfaces ci" c3 are those which fit between the plates B'3'. Extendin out from the boss of the coupling-nose (which is marked(l) in a direction opposite to that in which the coupling-nose properextends is the locking-arm e, the thickness of which, where averticallymoving latch is used, as in my preferred form, must beconsiderably less than that of the'boss C, from which it springs. The upper surface c4 of this locking-ann should be flat, and a projecting lugc5 should be formed on the boss C at the back end of the upper surface cof the arm c, its position being such that it will strike the latch andprevent the knuckle from turning too far back in opening. Simple formsof latches to be used with my improved coupling-jaw are shown in Figs.2O and 2]. In Fig. 2O the latch F is pivoted in the arm A of the head atI), a spring p tending to press its end against the locking-arnr of thecol1plei]'a\v. As shown in this drawing, the surface f7 of latch F isengaged with the arm c" of the jaw, and the jaw is thus locked sluit.\Vhen it is desired to open the jaw, the latch F is pulled backward by aconnection II, thus releasing the arm e and permitting the jaw to openuntil the lug c comes in contact with the latch. In Fig. 2l avertically-moving pin F2 is shown, which, in its lowest position,engages the arm c of the nose, but when raised above the surface el ofthe arm, c" permits the said arm to rotate under it until the lug cicomes in contact with the pin. Neither of these latches is new inprinciple, and, as will be seen, the latch of my preferred and .morecomplicated structure is in principle identical with that shown in Fig.2l.

1With the coupling-noses heretofore used in connection with similar couplin g-heads it has been usual to carry a loekingarm back from. the bossin the direction of the shank of the coupling-head, a latch beingprovided in the back part of the arm A, this locking-arm ren l'OOquiring either'a great increase in the thickness and weight of the arm Aor else turning out into the opening between the arms A' and A2 when thejawwas open-as, for instance, in the well-known J anney coupler. Byform.- ing my locking-arm c6 so that it will extend out from the boss Cin the opposite direction to that of the coupling-nose-proper andplacing the latch with which it engages in the outer part of the arm A',I at the same time secure a great economy of the metal, the weight ofthe jaw being of course much less than that of the oldertypes'mentioned, and I leave the space between the plates B B open andunencumbered. It will also be noticed that the coupling-nose C is freeto turn inward, as shown in dotted lines in Fig. 24. This capacity forturning inward secures the nose from shocks, which are taken up on theend of the arm A', which I provide with the: square corners a tore-enforce it 'against such blows.

In order to enable my coupling to be used in connection with theordinary link-coupling, I place within its hollow shank and head aretractible supplemental coupling device, which can be drawn out throughthe open space in the'front of the coupling. This retractible device Isecure to the coupling-head in such a way as to permititlongitudinalmotion without permitting it to be entirely disconnected. This may bedone either by providing grooves in the upper and lower plates of thecoupling which will engage a pin upon the retractible device or byproviding the retractible device with a slot and the coupling with astationary pin, this latter plan being shown in Fig'. 20, while theother drawings represent the one first mentioned. In Fig. 2O I haverepresented this device in its simplest form, the retractiblesupplemental coupling device (here simply a link N) being placed in thecavity between plates B B and` a pin O passing from plate to plate andserving' as a guide and stop to the link. would answer very well whereit was only desired to make connection with link-and-pin draw-heads; butit ishighly desirable thatthe coupling should also have the capacity ofengaging with the well-known Miller coupler, and in that case a hookadapted to engage the Miller hook should be carried in the centralcavity of the coupling-head 'instead of the link. By perforating the endof this hook it can be used also as a link to couple with a pin.

In order to avoid multiplicity of parts and to enable my improvedcoupling to be used advantageously not only in the mode in which it isespecially adapted for use, but also to couple with link-and-pincoupler-heads, with Miller couplings, and the like, I have arranged theparts in the way shown bestin Figs, l to 16'.

Referring again to the lettered parts, F is a retractible supplementalcoupling device, having both a hooked edge f3, adapted to iit the hookof a Miller coupler, and a hole f5 in its head, by which a pin-couplingcan be made.

Such a device.

The rear vend of this device is provided with pins f, which iit in agroove G, formed in the plates B B', which compose the coupling-head.Instead of striking up the metal to form the grooves G, which isadvantageous, because it forms strengthening-corrugations as well as aguiding-groove, the metal can be cut out, as at G G', Fig. 17, or a slotmay be formed in the supplemental coupling and a pin O used, as in Fig.20. The advantages of striking up the guiding-grooves G are, however, soapparent that this plan will undoubtedly have they preference.

The outer end f of the retractible coupling device F is shaped so as tofit against the locking-arm'c. of the coupling-nose C when F is drawnback to its rearmost position and thrown over so that its end will restin the arm A', as shown in Fig. 3. The back end g of the slot G must beaccurately formed to afford a firm bearing for F, and to hold it in sucha position that when it engages the arm c6 it will hold the nose incorrect position for coupling. The depth or thickness of the arm F ismuch less than that of the space between plates B B' forming the'coupling-head, and

its front end can thus be elevated above the top c4 of the lockingarm c,when the jaw or coupling will be free to turn outward until the lugcomes in contact with the end of F. Figs. 14 and l5 illustrate theposition of the bar F and the coupling-nose when the jaw is fullyopened. It is of course necessary that the bar F should be properlyaligned and held in position when it is used as a latch to lock thecoupling-nose C. This may be done in any convenient wayas, for instance,as shown in Fig. 22, where a guide-pin K is dropped through the openingf5 in the end of bar F. I prefer, however, to form or lattach a pin f tothe lower side of the head of bar F,

and in such a position that it will come flush with Jthe hook f3. Thispin f4 is dropped into a hole b in the lower plate B', and the bar F isthus properly aligned. The pin fA1 exceeds in length the thickness ofthe bar B, and therefore projects below the under side of the bar, andby pushing upon the end of this pin the end of bar F is elevated abovethe surface ct of the locking-arm c6, and the coupling jaw or nose thusreleased. A convenient way of acting on this pin is by .means of a camH, which, as shown, I have secured on a shaft h', j ournaled in a lug orprojection 7 L of the IOO coupler in such aposition that when the shaft,y

crease the depth of the hook-face, and there-- fore render its engagement with a Miller hook, as in Fig. 7, more perfect.

lVhen it is desired to use my improved coupling with a linkand-pincoupling-head, as in Fig. (5, the bar F is lifted up, so that its pin fwill be disengaged from the hole b. Its front end is then moved arounduntil the bar lies substantially in line with the shank of the coupler,and is then drawn forward through the bifurcated end of the jaw C untilits pins f come in contact with a pin J', which is placed in the slot Gin such a position that it will stop the forward motion of the bar Fwhen it is of the right length to make a linkand-pin coupling. Of coursethis pin might be omitted and the forward motion of the bar 4F stoppedonly when it reaches the extreme forward end of its guiding-slot G; butas it is necessary to move the bar F farther out to make a coupling witha Miller hook than itis to make a link-coupling, I prefer to use thispin J, so that there will not be too much lost motion; and it also hasanother important function, which I will hereinafter explain.

Then it is desired to use the bar F to make a coupling with a Millerhook, I have found it desirable to curve the groove Gr, as shown inFigs. 1 to 1G, so that the front end g' of said slot shall be well overin the arm A2. The reason of this is obvious at a glance at Fig. 7,though, instead of curving the groove, I can make the bar F curved, asshown in Fig. 1S, so as to leave room for the Miller head between thearms A' and A2 of my coupling'- head. f (shown best in Figs. 3, (5, and7) is a spring attached to the bar F. In moving the bar forward in thegroove G the pin .I is withdrawn to permit it to pass to the ends g' ofthe groove G, and can then be placed back in its holes and the spring fmade to rest against it. The compression of this spring will cause thehead of bar F to press toward the arm A', and thus the coupling with theMiller head M (see Fig. 7) is renderedl more secure and also easier tomake. The pin J is cut away in the center at y', so that it will notinterfere with the bar F, but only engage the pins f, which guide andhold it in the groove G.

It is of course evident that many of the features of my improvedcoupling are capable of useful application apart from each. other. Ihave in the drawin illustrated the coupling in what I believe to be itsbest form, and I have also shown some of many possible modifications. Ido not wish, however, to be understood as limiting myself to thecombination shown, except where the same is delinitely and clearlyreferred to in the claims.

Ilavin g now described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. A coupling-head consisting of plates I3 I3', of suitable form, incombination with stays situated on the outer edges of said plates andbetween the coupling-head proper and the end of its shank, substantiallyas and for the purpose speciiied.

2. A coupling-head consisting of plates B E' and of suitable form andprovided with longitudinal corrugations, in combination with stayssituated on the outer edges of said plates, seeurin g them together andat a proper distance apart, so that the space between said plates mayopen freely and without obstruction in front.

3. A coupling-head consisting' of plates B I3' of suitable form,provided with longitudinal corrugations and with their front edges thickcned externally, in. combination with stays situated on the outer edgesof. said plates, se curin g them together and. at a proper distanceapart, so that the space between said plates may open freely and withoutobstruction in front.

4. In combination with a coupling-head consisting of plates B 3', unitedby stays securing them together and at a proper distance apart, whileleaving t-he space between said plates open in front of said head, acoupling nose or knuckle pivotcd in one arm of the head, a latch forlocking said. nose, and a retractible supplemental coupling device se-.cured between the plates B I3', as specified, so as to normally lieinside the head and be capable of being drawn forward to engage withanother coupler.

5. In combination with a couliling-head consisting of plates B li',secured together and at a suitable distance apart by stays which leavethe space between the plates unobstructed in the front, a bifurcatedcouplingnose made without vertical perforation pivoted in one arm of thehead, a latch for locking said nose, and a retractible suppementalcoupling device secured between the plates i3 B', as specified, so as tonormallylic inside the head and be capable of being drawn forward toengage with another coupler.

G. In combination with a coupling-head consisting of plates B l',secured together and at a suitable distance apart by stays which leavethe space between. the plates unobstructed in the front, a eoupling-nosepivoted in one arm of the head, a latch for lecking said nose, and aretraetible supplemental coupling device having its end formed into ahook secured between the plates l; l5', as specified, so as to normallylie inside the head and be capable of being drawn forward to engage withanother couplcr.

7. In combination with a coupling-head consisting of plates I3 B',united by stays which secure them together at a proper distance apart,while leaving the said space between said plates open in front of thesaid head, a coupling nose o`r knuckle pivoted in one arm of the head, alatch for locking said nose, guiding-grooves formed in the plates l)Il', and a retractible supplemental coupling device having pins f at itsrear end, which said pins are engaged and slide in the guiding-grooves,whereby the supplen'iental coupling device is permitted to move forwardto engage with another coupler without becom- IOO ITO

proper distance apart, while leaving the said space between said platesopen in front of the said head, a coupling nose or knuckle pivoted inone arm of the head, a latch for lock ing said nose, and a retractiblesupplemental coupling device having pins f at its rear end, which saidpins are engaged and slide in the grooves G, whereby the supplementalcoupling device is permitted to move forward to engage with anothercoupler without becoming disengaged from the head.

9. In combination with a coupling -head consisting of plates BB',secured together and at a proper distance apart by stays which leave thespace between the plates open in front, a coupling nose or knucklepivoted in one arm of said coupling-head, a latch for locking said nose,a curved guiding-groove formed on the inside of the plates B B along thecenter of their shanks and the center of the guard-arm of the coupleropposite to the armV holding the knuckle, and a retractible supplementalcouplingdevice having a hooked end in front and its rear end providedwith pins which engage with the plates B B.

10. In combination with a coupling-head consisting of plates B B securedtogether and at a proper distance apart by stays which leave the spacebetween the plates open in front, a coupling nose or knuckle pivoted inone arm of said coupling-head, a latch for locking said nose, a curvedguiding-groove formed on the inside of the plates BB along the center oftheir shanks and the center of the guard-arm of the coupler opposite tothe arm holding the knuckle, a stop-pin J, adjustable in saidguide-slot, and a retractible supplemental coupling device having ahooked and perforated end in front and its rear end provided with pinswhich engage with the guide-slots on the plates B B.

11. In combination with a coupling-head consisting of plat-es B B',secured together and at a proper distance apart by stays which leave thespace between the plates open in front, a bifurcated coupling nose orknuckle pivoted in one arm of said coupling-head, a latch for lockingsaid nose, a curved guidinggroove formed on the inside of the plates B Balong the center of their shanks and the center of the guard-arm of thecoupler opposite to the arm holding the knuckle, a stop-pin J,adjustable in said guide-slot, a retractible supplemental couplingdevice having a hooked and perforated end in front and its rear endprovided with pins which engage with the guide-slots on the plates B Band a spring f6, secured on the retractible coupling device so as topress against the slop-pin J when said device is drawn forward in thecurved guiding-groove, substantially as and for the purpose specified.

12. In combination with a coupling-head A, having arms A A2, a couplingnose or knuckle C, pivoted in the arm A and having a locking-armextending from it in substantiallyl guide-slots on the the oppositedirection to that of the knuckle proper, and a latch arranged to engagesaid arm and lock lthe nose in its closed position. 13. In combination`with a coupling-head A, having arms A A2, square proj ecting'corners a,formed on the inside ot the ends ofl the plates composing the arm A, acoupling nose or knuckle pivoted in arm A and having a locking-armextending from it in a direction substantially opposite to the knuckleproper, and a latch arranged to engage said arm and lock the knuckle initsclosed position. y

14. In combination with a coupling-head A, having arms A A2, acouplingnose or knuckle C, pivoted in the arm A and having a locking-armc6 of less depth than the boss of the knuckle extending from it insubstantially the opposite direction to that of the knuckle proper, astop-lug c5, and a vertically-movable latch arranged whenin its lowestposition to engage said arm and lock the nose in its closed position andwhen elevated toA allow arm c6 to pass under it until said latch comesin contact with the stop-lug c5, all substantially as and for thepurpose specified.

15. In combination with the coupling-head A, having arms A A2, said headbeing made up of plates B B secured together and at a proper distanceapart by stays uniting their outer edges, so as to leave the spacebetween the plates an unobstructed front opening, a coupling-nose (l,pivoted in arm A and having a locking-arm extending from it in adirection opposite to that of the knuckle proper, a latch adapted toengage said locking-arm, and a retractible supplementary coupling devicesecured in and extensible from the couplinghead, substantially as andfor the purpose specified.

16. In combination with the coupling-,headI IOO A having arms A A2 saidhead beingmadeu of plates B B', secured together and at a properdistance apart by stays uniting their outer edges, so as to leave thespace between the plates an unobstructed front opening, a bi- IIOfurcated coupling-nose C, pivoted inA arm A and having a locking-armextending from it in a direction opposite to that of the knuckle proper,a latch adapted to engage said lockin g-arm, and a retractiblesupplemental coupling device having a hooked and perforated outer endsecured in and extensible from the coupling-head, substantially as andfor the purpose specified.

17. In combination with the coupling-head A, constructed so as to permitthe space between its upper and lower plates to open freely in front, abifurcated coupling-nose C, pivoted in one arm of the coupler and havinga locking-arm c6 extending from it, a latch to engage and lock said arm,guiding-grooves formed on the upper and lower plates ofthe head, aretractible supplemental coupling device F, having a hooked andperforated end ISC at its front, bearing-pins f engaged in the w 1S. Incombination with the coupling-head A, constructed, substantially asspecified, so as to leave the space between the upper and lower platesopen and unobstructed :in front, a coupling-nose C, having locking-armc, extending from its boss in a direction opposite to that of theknuckle proper, said arm being of less thickness than the boss,guiding-grooves formed in the upper and lower plates ot' the arm, and aretractible supplemental coupling device having pins f at its rear endengaged in the guiding-grooves and its length so proportioned that whenin its rearmost position and with its head thrown into the arm ot thecoupler which carries the knuckle the said head will act as a latch inconnection with the arm c of the coi11)li11g-lmi1ckle (l, allsubstantially as and i`or the purpose specitied.

lf). In combination with the coupling-head A, constructed, substantiallyas specified, so as to leave the space between the upper and lowerplat-es open and unobstructed in front, a coupling-nose C, havinglocking-arm c, extending from its boss in a direction opposite to thatof the kn uckle proper, said arm being of less thickness than the boss,guidinggroovcs formed in the upper and lower plates of .the coupler, aretractiblc supplemental coupling device having pins f at its rear endengaged in the guiding-grooves, and a hooked and perforated head, itslength so proportioned that when in its rearmost position and with itshead thrown into the arm of the coupler which carries the knuckle thesaid head will act a latch in connection with the arm c of thecoupling-knuckle (l, all substantially as and Afor the purposespecified.

E30. In combination with the coupling-head A, coiistructed,substantially as specified, so as to leave the space between the upperand lower plates open and unobstructed in front, a couplingnose C,having a locking-arm c, extending from it-s boss in a direction oppositeto that of the knuckle proper, said arm being of less thickness than theboss, guidinggrooves formed in the upper and lower plates of thecoupler, a retractible supplemental coupling device having pinsf at itsrear end engaged in the guidi11g-grooves, ahooked and perforated head, apin f4, extending from its under side and iiush with the edge f3 of thehook, said pin being of sufficient length to extend through and below ahole D in the lower plate oi' the coupling -head and its length soproportioned that when in its rearmost position and with its head throwninto the arm of the coupler which carries the knuckle the said head willact as a latch in connection `with the arm cG of the couplingknuckle C,and a cam ll, secured below the hole l), so that when turned it willpress against the pin f1 and elevate the head of the retractiblecoupling device to unlatch the arm 2l. In combination with thecoupling-head A, constructed, substantially as specified, so as to leavethe space between the upper and lower pla-tes open and unobstructed infront, a coupling-nose (l, having a locking-arm c, extending from itsboss in a direction opposite to that ot' the knuckle proper, said armbeing of less thickness than the boss, curved guiding-grooves formed inthe upper and lower plates et' the coupler, so as to extend along theshank and into the guard-arm, a retractible supplemental coupling devicehaving pinsf at its rear end engaged in the guidinggrooves, and a hookedand perforated head, its length so proportioned that when in itsrearmost position and with its head thrown into the arm ot' the couplerwhich carries the knuckle the said head will act as a latch inconnection with the arm c of the coupling-knuckle C, all substantiallyas and for the purpose specified.

22. In combination with the coupling-heatfl A, constructed,substantially7 as specified, so as to leave the space between the upperand lower plates open and unobstructed in front, a coupling-nose U,having a locking-armA c, extending it'rom its boss in a directionopposite to that of the knuckle proper, said arm being of less thicknessthan the boss, guidin grooves formed in the upper and lower plates ofthe coupler, a retractible supplemental coupling device having pinsj" atits rear end engaged in the guidin; ,Y-grooves and its length soproportioned that when in its rearmost position and with its head throwninto the arm of the coupler which carries the knuckle the said head willact as a latch in connection with the arm c of the coupling-knuckle C,and a stop-pin J, adjustable in the guiding-slots, all substantially asand for the purpose specified.

In combination with the' coupling-head A, constructed, substantially as"specified, so as to leave the space between the upper and lower platesopen and unobstructed in front, a coupling-nose (l, having a locking-armc, extending i'rom its boss in a direction opposite to that of theknuckle proper, said arm being of lessthickness than the boss, curvedguidinggrooves formed in the upper and lower plates of the coupling, soas to extend along the shank and into the guard-ann thereof, aretractiblc supplemental coupling device having pinsf at its rear endengaged in the curved guiding-grooves and hooked and perforated frontend, and its length so proportioned thatwhen in its rearmost positionand with its head thrown into the arm which carries the coupling-nosesaid head will act as a latch in connection with the arm c of theknuckle (l, a springf,secured to the supplemental coupling devicc, and astop-pin J, adjustable in the curved guiding-slot, all substantially asand 'for the purpose specified.

SAMUE I; ll'. l IARRTNG'ION. 1Witnesses:

F. E. lLIss, ff). C. lIowanD.

IOO

